I Transmigrated to Another World, So What’s Wrong With Bringing High Tech?

Xu Huacheng, a top researcher, was now old and bedridden at home. He glanced at the TV, which was still on. It was showing a program about how the people of the great nation of Huaxia had solved military spending just by smoking. The corner of Xu Huacheng's mouth twitched slightly. He took a pack of cigarettes from his pocket and opened it. There were two left. He silently took one out and lit it. He inhaled deeply, then raised his head and slowly exhaled the smoke. A bitter, regretful smile appeared at the corner of his mouth... He never thought that the last thing he could do for you would be... In a daze, Xu Huacheng saw what seemed to be another world in the smoke...